Came across this site in one of my writing magazines. Their purpose is to maintain an archive of audio and video recordings of historic people and events related to science fiction and fantasy.

Their Space Dog Podcast features historical interviews with authors. The first one has Arthur C. Clarke, Isaac Asimov, Lester del Rey, Frederik Pohl and Gordon R. Dickson. It was originally part of the Ballantine SF Hour in 1976. Hit the link above for that and other podcasts!